Revit二次开辟添加、取得墙核心边界系统

//创建结构层（厚度、功能、材质）
IList layers = new List();
//创建一条核心边界
CompoundStructureLayer layerSurfaceThickness = new CompoundStructureLayer(thickness, MaterialFunctionAssignment.Finish1, ElementId.InvalidElementId);//最后一个参数为材质，如果不填充任何材质则传ElementId.InvalidElementId，有材质则传具体的材质Id
layers.Add(layerSurfaceThickness);
//获取当前墙类型的所有核心边界信息
CompoundStructureLayer cs = (wallType as WallType).GetCompoundStructure();
//把新的核心边界信息，添加到cs中
cs.SetLayers(layers);
//最后把类型的核心边界重新Set
(wallType as WallType).SetCompoundStructure(cs);

//获取强类型中核心边界中，面层1的厚度值（MaterialFunctionAssignment枚举中还有很多类型）
List wall_StructureLayer = wall.WallType.GetCompoundStructure().GetLayers().Where(r => r.Function == MaterialFunctionAssignment.Finish1).ToList();

double surfaceLayer_Width = 0;
if(wall_StructureLayer.Count > 0)
    surfaceLayer_Width = wall_StructureLayer.First().Width;